How to extract the certain position's character in a string
Suppose there are two files:
B, format is like:
There are only two lines in B files, one starting with ">" and the rest string is one line and they may be very long.
The problem is how to extract the exact character in B's string according to the 2nd columns' information in A, and output the characters in A's order?
I notice the awk substr function might be of help, but I didn't know how to handle with two files.
Thanks!
Last edited by Scrutinizer; 06-30-2012 at 05:51 AM..
Reason: code tags
Depending upon character at particular position in a line, string needs to be appended followed by empty spaces till 256th column position at the end of the each line in the file.
example:
123p4 J8769
123q4 R2345
123r4 S2345
What I Require is, it has to check at 7th column character and... (10 Replies)
ps -eaf | grep “oracleTRLV (LOCAL=NO)” | while read ora_proc
do
echo $ora_proc
done
I would like to modify the above shell so that if character 13 and 14 equal "12" to do something.
Sorry I'm new to shell:( (14 Replies)
Hello everyone this is my first post of many to come :)
I am writing a script and in this script at one point i need to replace a character in a particular position in a string for example:
in the string "mystery" i would need to replace the 3rd position to an "r" so the string becomes... (3 Replies)
hi ,
i am having a file
Full_ARTMAS_20110510152425.xml in my local directory. i wanted to extract the character at the 35143546 th position at line 1 of this file.Can any body help me how to do it???
regards
Anjali (2 Replies)
i have this prob
I have some records in a file1 like this
1001 sajal singh tampa
1002 .... so on
i have a pattern file which is like this
1,4 4,13 14,15
i have to read the first pair 1,4 and extract that from the first record
so the pattern is 1001
now i have to scramble 1001... (1 Reply)
Hi guyz i want to know nth position of character in string. For ex.
var="UK,TK,HK,IND,AUS"
now if we see 1st occurance of , is at 3 position, 2nd at 6,..4th at 13 position.
1st position we can find through INDEX, but what about 2nd,3rd and 4th or may be upto nth position. ?
In oracle we had... (2 Replies)
Hello,
I have a file of strings a below:-
4358RYFHD9845
28/COC/UYF984
9834URD 98HJDU
I need to extract all the first numeric character of every sting as follows:-
4358
28
9834
thanks to suggest ASAP
Regards,
Jasi
Use code tags, thanks. (7 Replies)
Discussion started by: jassi10781
7 Replies
LEARN ABOUT DEBIAN
io::async::protocol::linestream
IO::Async::Protocol::LineStream(3pm) User Contributed Perl Documentation IO::Async::Protocol::LineStream(3pm)NAME
"IO::Async::Protocol::LineStream" - stream-based protocols using lines of text
SYNOPSIS
Most likely this class will be subclassed to implement a particular network protocol.
package Net::Async::HelloWorld;
use strict;
use warnings;
use base qw( IO::Async::Protocol::LineStream );
sub on_read_line
{
my $self = shift;
my ( $line ) = @_;
if( $line =~ m/^HELLO (.*)/ ) {
my $name = $1;
$self->invoke_event( on_hello => $name );
}
}
sub send_hello
{
my $self = shift;
my ( $name ) = @_;
$self->write_line( "HELLO $name" );
}
This small example elides such details as error handling, which a real protocol implementation would be likely to contain.
DESCRIPTION EVENTS
The following events are invoked, either using subclass methods or CODE references in parameters:
on_read_line $line
Invoked when a new complete line of input is received.
PARAMETERS
The following named parameters may be passed to "new" or "configure":
on_read_line => CODE
CODE reference for the "on_read_line" event.
METHODS
$lineprotocol->write_line( $text )
Writes a line of text to the transport stream. The text will have the end-of-line marker appended to it; $text should not end with it.
AUTHOR
Paul Evans <leonerd@leonerd.org.uk>
perl v5.14.2 2012-10-24 IO::Async::Protocol::LineStream(3pm)